Lighting fixture base



FIG. 1 is a perspective view of a lighting fixture base showing my new design;

FIG. 2 is a front elevational view thereof on a reduced scale;

FIG. 3 is a rear elevational view thereof on a reduced scale;

FIG. 4 is a right side elevational view thereof on a reduced scale;

FIG. 5 is a top plan view thereof on a reduced scale;

FIG. 6 is a front elevational view of a second embodiment of my new design;

FIG. 7 is a right side elevational view thereof the left side being a mirror image;

FIG. 8 is a front elevational view of a third embodiment of my new design;

FIG. 9 is a right side elevational view thereof the left side being a mirror image;

FIG. 10 is a front elevational view of a fourth embodiment of my new design;

FIG. 11 is a right side elevational view thereof the left side being a mirror image. 

The ornamental design for a lighting fixture base, as shown and described. 